Question

suppose we want to test the claim that the majority of adults are in favor of raising the voting age to 21. is the hypothesis test left-tailed, right-tailed, or two-tailed?
a. right-tailed
b. two-tailed
c. left-tailed

Explanation:

When testing the claim that the majority of adults are in favor of raising the voting age to 21, we are interested in whether the proportion \(p\) is greater than \(0.5\) (since a majority means \(p>0.5\)). In hypothesis testing, if the alternative hypothesis is \(H_1: p > p_0\) (where \(p_0 = 0.5\) in this case), the test is right - tailed. A left - tailed test would be for \(H_1: p < p_0\) and a two - tailed test for \(H_1: p
eq p_0\).

Answer:

A. Right - tailed